简便计算:0.36*8.1+3.6*0.810.36*8.1+3.6*0.81

问题描述:

简便计算:0.36*8.1+3.6*0.81
0.36*8.1+3.6*0.81

0.36*8.1+3.6*0.81
=0.36*8.1+0.36*8.1
=2*0.36*(9-0.9)
=5.832

0.36*8.1+3.6*0.81
=0.36*8.1+0.36*8.1
=2*0.36*8.1=5.832